Visibility adjusting method and apparatus of vehicle

Abstract

A visibility adjusting section ( 10 ) is formed by making a visible light transmission of a region (A) in a lower side of left and right ridgelines (Rl, Rr) lower than a visible light transmission of a region (B) in an upper side of the left and right ridgelines (Rl, Rr). Accordingly, a driver and a passenger on an assistant driver's seat can see an outer side of a vehicle through the visibility adjusting section ( 10 ), and a suitable light can be taken into the vehicle. Further, since a parting line ( 11 ) of the visibility adjusting section ( 10 ) is uniformly inclined downward toward opposite sides in a vehicle-width direction from an apex (T) disposed at a position which is deviated from a driver, a driving posture of the driver is stabilized, and it is possible to suppress a disturbance in a steering operation.

1. A visibility adjusting method of a vehicle in which a windshield is provided at its lower end with a visibility adjusting section to adjust forward visibility of a driver, comprising the steps of:
 disposing an apex at a position deviated from the driver and between a position opposed to the driver and a vehicle center position; 
 setting right and left ridgelines which uniformly downwardly incline from the apex toward opposite sides in a vehicle-width direction; and 
 forming the visibility adjusting section by making a visible light transmission in a lower region of the right and left ridgelines lower than a visible light transmission in an upper region. 
 
   
   
     2. The visibility adjusting method according to  claim 1 , wherein the visible light transmission in the lower region is intermittently or continuously changed within the region. 
   
   
     3. The visibility adjusting method according to  claim 1 , wherein the lower region does not transmit any light from an outer side of the vehicle. 
   
   
     4. The visibility adjusting method according to  claim 1 , wherein the visible light transmission in the lower region is changed in correspondence to an intensity of the light. 
   
   
     5. The visibility adjusting method according to  claim 1 , wherein the lower region has a lowermost end and an uppermost end and wherein the visible light transmission in the lower region is intermittently or continuously changed such that the visible light transmission within the lower region is highest at the lowermost end of the lower region. 
   
   
     6. The visibility adjusting method according to  claim 1 , wherein the visible light transmission in the lower region is intermittently or continuously changed along a vertical direction to the right and left ridgelines. 
   
   
     7. The visibility adjusting method according to  claim 1 , wherein the visible light transmission in the lower region is intermittently or continuously changed along right and left directions of the lower region. 
   
   
     8. The visibility adjusting method according to  claim 1 , wherein the visible light transmission in the lower region is intermittently or continuously changed along up and down directions of the lower region.